What does the term "voltage drop" refer to in marine electrical systems?

The term "voltage drop" refers to the decrease in voltage that occurs as electrical current travels through wires or components in a marine electrical system. This phenomenon can happen due to resistance in the wiring and connections, which can reduce the voltage available to the load at the end of the circuit.

In practical terms, the voltage drop is an important consideration in marine applications because it can affect the performance of electrical devices. If the voltage at the load is significantly lower than the voltage at the source, devices may not operate efficiently or may not work at all.

This concept is critical for ensuring that wiring and components are appropriately sized to minimize voltage drop, thereby maintaining the electrical system's efficiency and reliability. Proper calculations and understanding of voltage drop can help marine technicians avoid issues such as dim lights, underperforming motors, or malfunctioning electronics on a boat.